It has been sometime and I am using 1.8.0 beta 43, nothing has changed I still have very slow performance in both Unity and Playmaker Editor. Disable Autoload prefab in scene & real time error checking doesn't help at all.
I also realised, even with the Autoload prefab off my empty scene is still loaded with hundreds of FSM in Playmaker editor so trying to PLAY an empty scene takes more than 10 seconds.
To recreate this, just load a scene with many FSM game object, go to new empty scene. Open Playmaker Editor and you will see all the FSM object still remain in the recent list from previous heavy scene. Is there a way to clear the list so at least I can have run faster on an empty scene?